Technological change is beneficial only when other jobs replace the ones lost.

By default, we have created a "system" of nursing-home care for the aged in which middle-class people pay exorbitant rates to for-profit nursing-home entrepreneurs - and then when private resources are consumed and the patient qualifies as a pauper, the nursing home begins billing Medicaid. This is precisely the antithesis of social citizenship; instead of the poor being accorded the dignity associated with the middle class, equality of treatment is achieved by making the middle class undergo pauperization.

If social security depresses savings rates, it is only because it is unfunded.

But of course you can have your cake and eat it, too - if you decide to to bake a second cake. And you may well find that baking two cakes does not take twice the work of baking one.

Though editorialists at The New York Times and The Washington Post still don't get it, most Democrats in Congress finally do: Today's trade disputes are no longer mostly about tariffs, quotas, or free entry of goods. They are about the ground rules for capitalism. Are there to be only property rights? What about the other rights that liberal democracies have fought for since the 1880s?

We are already well down the road toward a managed-trade regime. It would be far better to acknowledge that reality, and seek a set of reasonable rules, than to pretend that Ricardian trade is the norm and allow mercantilist states to overwhelm U.S. industry and ratchet down wages, in the name of free trade.

Technological advance often thrives in sheltered and subsidized markets, which defy free trade.